Grate.



A. s. ROBERTS.

GRATE. APPLICATION FILED D301. 1907 91 6,022, Patented Mar. 23, 1909.

2 SHEETS-SEEBT 1.

wwmw I 1110 11101" Mb 112 I I Ma /13%;, W WW ARTHUR s. ROBERTS, orKNOXVILLE, TENNESSEE.

GRATE Specification of Letters Patent.

Patented March 23, 1909.

Application filed December '7, 1907. Serial No. 405,579.

To all whom it may concern:

Be it known that I, ARTHU S RoBERTs, citizen of the United States,residing at Knoxville, in the county of Knox, State of Tennessee, haveinvented certain new, useful, and l economical Improvements in Grates,and do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same. I

This invention relates to new and useful improvements in revolvinghollow grate backs adapted to support gratebaskets on one side or tieother thereof and designed for use in suitable frames in openings inpartition walls between two rooms and so arranged that a fire in onegrate basket may be made to heat one or the other of the rooms byswinging the hollow grate back upon pivots.

More specifically, the invention comprises a revolving hollow grate backmade up of two co-acting U-shaped plates which are fastened together andprovided with hooks uponwhich the grate basket may be supported.

The invention comprises various details of construction, combinationsand arrangements of parts which will be hereinafter fully described andthen specifically defined in the apended claims.

I illustrate my invention in the accompanying drawings, in whichz-Figure1 is a erspective view of one of the grate baskets.

ig. 2 is an end view of the hollow grate back showing baskets hung onthe opposite sides thereof. Fig. 3 is a detail perspective view of thehollow grate back, showing the manner in which the two angled plates arefastened together. Fig. 4 is a detailed view of the top of a casing orframe adapted to be positioned in an opening in the partition wall andin which frame the hollow grate backis mounted. Fig. 5 is a detailperspective view of one of the sides of the frame. Fig. 6 is a similarview of the opposite side of the frame. Fig. 7 is a detail perspectiveview of the bottom of the frame. Fig. 8 is a detail view of one of thefastening devices for holding the two U-shaped co-acting plates formingthe hollow grate ack together. Fig. 9 is a similar view to Fig. 8showing the two hooks fastened together. Fig. 10 is a bottom plan viewof the hollow grate back, and Fig. 11 is a top plan view of the grateback.

Reference now being had to the details of the drawings by numeral, 1 and1 designate respectively two U-shaped co-acting plates forming a hollowgrate back, one of said plates, designated by numeral 1, being providedwith a lug 7 at each end adapted to engage a recess 7 in the angled endof the plate section 1 and a lug 8, integral with the plate 1, engages asimilar recess 8 formed in the angled end of the plate 1. Projectingfrom the top of the plate 1 and from the bottom of the plate 1 are theintegral bars 13, the bar upon said plate 1 having dovetail connectionwith the upper edge of the plate 1 while the bar 18 upon the lower edgeor bottom of the plate 1 has similar dovetail connection with the bottomof the plate 1. Bolts 9 are passed through said plates andeach bolt hasa threaded end adapted to engage a nut 10 having a hook end 4, a detailof which is shown in Fig. 8 of the drawings. Each bolt has a hooked end5 and each of the hooks 4 and 5 is adapted for the reception of hooks 45upona basket 40. Said plates are preferably U-shaped and have verticalslots 12 formed in the outer faces thereof and entirely below said,plates is the bottom 41 of a frame which has an angled recess 29 formedin the upper face thereof, the inner end of which recess ends in anaperture 28 which forms a bearing for the lug 16 upon the bottom of theplate 1.

Immediately above the hollow grate back and supported upon the sides 21and 22 respectively of the frame is the top 24 of the frame, shownclearly in Fig. 4 of the draw ings. Each end of the sides 21 and 22respectively has a lug 21 adapted to engage the holes 44 in the top 24and bottom 41, which latter is also provided with an angled recess 26 inthe under surface thereof, the inner end of which recess in the topterminates in an offset 25, which recess and offset are provided for thereception of a pivot 15 upon a projection 13 of the plate 1. When thetwo U- shaped plates are fastened together in the manner shown in Fig. 3of the drawings and mounted between the top and bottom of the frame, thebasket may be hung upon the hooks 4 or 5. A slip bolt 18, shown in Fig.3 of the drawings, is mounted upon the plate 1 and is adapted to engagean aperture 19 or 20 in either side 21 or 22 accordingly as the hollowgrate back is swung in one direction or the other and provided for thepurpose of holdin said hollow grate back stationary. It will be notedthat the upper surface of the bottom 41 of the frame is channeled asat44 affording means for allowing cool air to enter Fig. 10,

through said channels designed to communicate with channels 38 formed inthe inner faces of the plates 1 and 1.

In order to limit the pivotal movement of the hollow grate back, a stop17, shown in is provided which projects from one of the grate sectionsand is adapted to engage one or the other of the recesses 30' or 31 and,as said stop comes in contact with the end wall of either recess 30 or31, the movement of the hollow grate back in one direction or the otherwill be limited.

In operation, when it is desired to rotate the hollow grate back, theslip bolt is released from one or the other of the apertures 19 or 20and thus allowing the back to swing so that a basket may be made toproject into one room or another or, if desired, the basket may be hungupon either side of the hollow grate back in the manner shown in Fig. 2of the drawings.

What I claim to be new is 1. In combination with a frame adapted to bepositioned in an opening in a partition wall, a hollow grate back madeup of two co acting U-shaped plat-es each having a recess therein, eachplate having a laterally proj ecting portion adapted to have dove-tailconnection with the other plate in one of said recesses, a lug upon eachof said projections, 1 the top and bottom of the frame having rel cessesformed therein with an oflset at the end of each recess in which saidlugs have bearings, hooks projecting from the outer faces of saidplates, and baskets hung upon said hooks, as set forth.

2. In combination with a frame adapted to be positioned in an opening ina partition wall, a hollow grate back made up of two 00- acting U-shapedplates each having a recess therein, each plate having a laterallyprojecting portion adapted to have dove-tail connection with the otherplate in one of said recesses, a lug upon each of said projections, thetop and bottom of the frame having recesses formed therein with anoil'sct at the end of each recess in which said lugs have bearings,hooks projecting from the outer faces of said plates, baskets hung uponsaid hooks, the bottom of the frame having recesses adjacent to the endsthereof, a stop upon the hollow grate back adapted to swing into one orthe other of said. oppositely opening recesses and designed to contactwith the inner walls of the recesses to limit the rotary movement of thegrate back, as set forth.

In testimony whereof, I affix my signature presence of these witnesses.

ARTHUR S. ROBERTS.

Witnesses:

HARRY VVHrTEHoUsE, JOHN L. SONNER.

